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New Minirig subs - Beyma 8BR40/N

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dnbpc View Drop Down
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    Posted: 17 May 2018 at 1:59pm
Hellooo

A few years ago I built a minirig for the house/BBQs and the park (although never got round to that bit) I originally built some mini scoops and a reflex kick bin more for the aesthetics rather than a practical reason. The scoops were based on a scaled down eminence design and sound decent but are mainly higher bass than much useful sub. The kick bin I tuned quite high to make it more suited to kick when now I'm thinking this would have been better as Sub. Both are loaded with Beyma 8BR40/N 

I'm now planning to go with a single design to play the full sub/bass range but am I looking to maximise SPL as I finally plan on making it mobile and taking it out and about while the sun is still here . Does anyone have any suggestions on a design that I could use? Driver specs - https://www.beyma.com/getpdf.php?pid=8BR40/N

Current setup:


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Post Options Post Options   Thanks (0) Thanks(0)   Quote mini-mad Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2018 at 2:15pm
Transmission line?

If it sounds like a gorilla is trying to escape, turn it down.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dnbpc Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2018 at 2:56pm
I'm not too familiar with transmission line designs if i'm honest, is there a way to model predicted response with them similar to winisd etc... the little bit of reading i've just done says they're more a trail and error kind of job 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bob4 Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2018 at 3:33pm
Originally posted by mini-mad mini-mad wrote:

Transmission line?



Smart man
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DMorison Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2018 at 3:53pm
Originally posted by dnbpc dnbpc wrote:

I'm not too familiar with transmission line designs if i'm honest, is there a way to model predicted response with them similar to winisd etc... the little bit of reading i've just done says they're more a trail and error kind of job 

Hornresp has that capability, there's even a wizard where you can set up the basic layout, under Help>Input Wizard (or just F7) Wink
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dnbpc Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2018 at 4:23pm
Cheers i'll be giving that a go when I get home 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mini-mad Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2018 at 6:43pm
Originally posted by dnbpc dnbpc wrote:

I'm not too familiar with transmission line designs if i'm honest, is there a way to model predicted response with them similar to winisd etc... the little bit of reading i've just done says they're more a trail and error kind of job 
They are not trial and error... Theres a nice paper I read up on and had a blast at myself using a pair of 10" drivers. Can't find it at the moment but we'll worth a read
If it sounds like a gorilla is trying to escape, turn it down.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dub Specialist Sound Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2018 at 7:53pm
hahaha love that .....little system
Musical Roots Reggae Vibration is Life! for music is sound...sound is vibration...vibration is energy... and energy begets life. Therein lies my passion!...MUSIC IS LIFE...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mini-mad Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2018 at 10:33pm
Originally posted by dnbpc dnbpc wrote:



The front could look the same... if you made those "scoops" deeper and tucked a long transmission line into them with the final leg of the pipe opening up to LOOK like the front of your nano-scoops... that should increase your bandwidth a little enough to get some half decent bass without pushing the driver into meltdown... bolt them together as they are and stick wheels on the back and it SHOULD be easy to transport!

If it sounds like a gorilla is trying to escape, turn it down.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mini-mad Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2018 at 10:37pm
Kind of like this... kinda... but with your own twist.


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Post Options Post Options   Thanks (0) Thanks(0)   Quote dnbpc Quote  Post ReplyReply Direct Link To This Post Posted: 18 May 2018 at 9:52am
I like that idea as it will keep the interesting look as well, going to have a play around this weekend and see what I can come up with 
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